I Have Been Getting Dizzy A Lot, Mostly When Getting

I have been getting dizzy a lot, mostly when getting up and down. Also a few times my left arm feels like it's being squeezed. I am 58 year old female, had a normal skipping heart beat along time. Take no meds. Otherwise healthy except been in remission of non-hodgkins for 8 years. Never had any treatments, just blood tests twice a year. Have 100/70 blood pressure and 160 cholesterol.